Bisphenol A synthetic resin catalyst and preparation method thereof
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A technology for synthesizing resins and catalysts, applied in the field of high-strength bisphenol A resin catalysts and their preparation, can solve the problems of limiting the scope of use of resin catalysts, limiting the flow of reactants and products, and restricting the localization of bisphenol A technology. Anti-crushing performance, reducing differential pressure and improving service life
Active Publication Date: 2017-04-19
KAIRUI ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology
In industry, fixed-bed reactors are basically used to produce bisphenol A. At present, because the bisphenol A production technology independently developed in China cannot meet the needs of the production process in terms of catalyst technology, the quality is far from meeting the market demand. Bisphenol A production technology has been imported from abroad, but due to the monopoly of foreign companies on catalyst technology, they can only import high-priced resin catalysts. The localization of bisphenol A technology has been severely restricted. To improve the production capacity of bisphenol A in my country To produce high-quality bisphenol A prod
Method used
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Embodiment 1
[0033] A bisphenol A synthetic resin catalyst is prepared by the following method,
[0034] 1) Polymerization reaction
[0035] In the reactor, by weight, add 100 parts of styrene, 5 parts of divinylbenzene, 1 part of diallyl bisphenol A, 20 parts of 2-methyl-1-butanol, at 78 ° C React for 4 hours, raise the temperature to 84°C for 2 hours, then raise the temperature to 96°C for 4 hours to generate polymerized white balls, after drying, extract the pore-forming agent and dry it for use;
[0036] 2) Sulfonation reaction
[0037] In the reactor, by weight, add 100 parts of white balls obtained in step 1), 1000 parts of 95% sulfuric acid, heat up to 80°C in 3h, keep warm for 10h, heat up to 86°C in 2h, keep warm for 6h, put on file according to the conventional process, Wash with water until neutral, discharge.
[0038] 3) Catalyst modification
[0039] In the reaction kettle, add 100 parts of the resin obtained in step 2) in parts by weight, add an appropriate amount of pure...
Embodiment 2
[0041] Polymerization reaction cross-linking degree is controlled at 2%, and others are the same as example 1. The resulting product number is KRC-2.
Embodiment 3
[0043]Polymerization reaction cross-linking degree is controlled at 4%, other is the same as example 1. The resulting product number is KRC-3.
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Abstract
The invention provides a bisphenol A synthetic resin catalyst and a preparation method thereof. According to the method, the crosslinking degree being 2 to 8 percent is used; third monomers with unsaturated double bonds are introduced to participate in copolymerization; mesoporous white balls with the pore diameter being 1 to 20 nm are obtained and are used as parent matrixes; then, a mild sulfonation process is used for sulfonation; finally, the resin is modified; and a high-intensity strong acid and mesoporous cation resin catalyst with the pore diameter being 2 to 10nm can be obtained. The pressure difference of the materials on the catalyst can be reduced by mesopores formed in the catalyst; the mesopores are favorable for the generation of bisphenol A; byproducts are few; the third monomers of diallyl bisphenol A are added into the catalyst in polymerization, the inside crosslinking structure of the resin is more stable; the pressure-resistant intensity is improved; the affinity of the resin on phenol is improved; the swelling property of materials of the phenol, acetone and the like on the resin is reduced; the damage of the materials to the resin is reduced. The catalyst provided by the invention has the advantages that through the addition of modifying agents, the effects of a cocatalyst are achieved; and the phenol and acetone conversion rate of the reaction raw materials is improved and is high.
Description
technical field [0001] The invention relates to a bisphenol A synthetic resin catalyst and a preparation method thereof, in particular to a high-strength bisphenol A resin catalyst and a preparation method thereof. Background technique [0002] Bisphenol A is the abbreviation of diphenol-based propane, also known as 2,2-bis(4-hydroxyphenyl)propane. As an important organic chemical raw material, bisphenol A mainly produces polysulfone resin, polyphenylene ether resin, Polycarbonate, epoxy resin and other polymer materials are also used in fine chemical products such as plasticizers, flame retardants, antioxidants, heat stabilizers, rubber antioxidants, pesticides, coatings, etc. The demand for A is increasing day by day. In industry, fixed-bed reactors are basically used to produce bisphenol A. At present, because the bisphenol A production technology independently developed in China cannot meet the needs of the production process in terms of catalyst technology, the quality...
Claims
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